Here is a video with guided timer.
This video is made for those who wish to do bicycle exercise at home gym office. This is a guided gym exercise which will help you to perform gym bicycle workout at home. This is an animated workout with guided instruction and timer.
The initial 10 minutes is with slow speed then 10 minutes is fast speed. This is to be repeated twice. And then at the end, to cool down body with normal rytheme a slow speed of 5 minutes is added.